/**
 * ***************************************************************************** Copyright (c) 2005,
 * 2006 Subclipse project and others. All rights reserved. This program and the accompanying
 * materials are made available under the terms of the Eclipse Public License v1.0 which accompanies
 * this distribution, and is available at http://www.eclipse.org/legal/epl-v10.html
 *
 * <p>Contributors: Subclipse project committers - initial API and implementation
 * ****************************************************************************
 */
package org.tigris.subversion.subclipse.core.repo;

import java.util.Comparator;
import org.tigris.subversion.subclipse.core.ISVNRepositoryLocation;

/**
 * This class allows to sort ISVNRepositoryLoction's alphabetically using the URL or the label (if
 * set). The case of the strings is ignored.
 */
public class RepositoryComparator implements Comparator {
  /** @see java.util.Comparator#compare(Obejct, Object) */
  public int compare(Object o1, Object o2) {
    if (o1 instanceof ISVNRepositoryLocation && o2 instanceof ISVNRepositoryLocation) {
      ISVNRepositoryLocation loc1 = (ISVNRepositoryLocation) o1;
      ISVNRepositoryLocation loc2 = (ISVNRepositoryLocation) o2;

      String label1 =
          (loc1.getLabel() == null || loc1.getLabel().length() == 0)
              ? loc1.getLocation()
              : loc1.getLabel();
      String label2 =
          (loc2.getLabel() == null || loc2.getLabel().length() == 0)
              ? loc2.getLocation()
              : loc2.getLabel();

      return label1.compareToIgnoreCase(label2);
    }

    return 0;
  }
}
